1231333133197 has 2 divisors, whose sum is σ = 1231333133198. Its totient is φ = 1231333133196.

The previous prime is 1231333133101. The next prime is 1231333133249. The reversal of 1231333133197 is 7913313331321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227455704836 + 3877428361 = 1107906^2 + 62269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231333133197 - 2¹⁵ = 1231333100429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231333133497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615666566598 + 615666566599.

It is an arithmetic number, because the mean of its divisors is an integer number (615666566599).

Almost surely, 2^{1231333133197} is an apocalyptic number.

It is an amenable number.

1231333133197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231333133197 is an equidigital number, since it uses as much as digits as its factorization.

1231333133197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 40.

The spelling of 1231333133197 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, one hundred thirty-three thousand, one hundred ninety-seven".